MacKinlay is a surname. Notable people with the surname include: Andrew MacKinlay (born 1949), British politician Andrew MacKinlay (cricketer) (born 1967), South African cricketer Andrew MacKinlay (N
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdb53baeb65f42522789387061ddeb97adab7b508f1872e01f4689701357d80. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fe8fccc-a8f0-4810-9857-262e27e3f7ad.json and https://artists.proofprofile.net/proofs/artist/5fe8fccc-a8f0-4810-9857-262e27e3f7ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).